Journal ArticleDOI
Highly sensitive flexible pressure sensors with microstructured rubber dielectric layers
Stefan C. B. Mannsfeld,Benjamin C. K. Tee,Randall M. Stoltenberg,Christopher V. H. H. Chen,Soumendra N. Barman,Beinn V.O. Muir,Anatoliy N. Sokolov,Colin Reese,Zhenan Bao +8 more
TLDR
Flexible, capacitive pressure sensors with unprecedented sensitivity and very short response times that can be inexpensively fabricated over large areas by microstructuring of thin films of the biocompatible elastomer polydimethylsiloxane are demonstrated.Abstract:
The development of an electronic skin is critical to the realization of artificial intelligence that comes into direct contact with humans, and to biomedical applications such as prosthetic skin. To mimic the tactile sensing properties of natural skin, large arrays of pixel pressure sensors on a flexible and stretchable substrate are required. We demonstrate flexible, capacitive pressure sensors with unprecedented sensitivity and very short response times that can be inexpensively fabricated over large areas by microstructuring of thin films of the biocompatible elastomer polydimethylsiloxane. The pressure sensitivity of the microstructured films far surpassed that exhibited by unstructured elastomeric films of similar thickness, and is tunable by using different microstructures. The microstructured films were integrated into organic field-effect transistors as the dielectric layer, forming a new type of active sensor device with similarly excellent sensitivity and response times.read more
Citations
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Semiconducting π-conjugated systems in field-effect transistors: a material odyssey of organic electronics.
TL;DR: The focus of this review will be on the performance analysis of π-conjugated systems in OFETs, a kind of device consisting of an organic semiconducting layer, a gate insulator layer, and three terminals that provide an important insight into the charge transport of ρconjugate systems.
Journal ArticleDOI
Skin-like pressure and strain sensors based on transparent elastic films of carbon nanotubes
Darren J. Lipomi,Michael Vosgueritchian,Benjamin C. K. Tee,Sondra L. Hellstrom,Jennifer A. Lee,Courtney H. Fox,Zhenan Bao +6 more
TL;DR: Transparent, conducting spray-deposited films of single-walled carbon nanotubes are reported that can be rendered stretchable by applying strain along each axis, and then releasing this strain.
Journal ArticleDOI
Electroactive phases of poly(vinylidene fluoride) : determination, processing and applications
TL;DR: In this article, the main characteristics of the electroactive phases of polyvinylidene fluoride and copolymers are summarized, and some interesting potential applications and processing challenges are discussed.
Journal ArticleDOI
25th Anniversary Article: The Evolution of Electronic Skin (E-Skin): A Brief History, Design Considerations, and Recent Progress
TL;DR: Electronic networks comprised of flexible, stretchable, and robust devices that are compatible with large-area implementation and integrated with multiple functionalities is a testament to the progress in developing an electronic skin akin to human skin.
Journal ArticleDOI
Flexible polymer transistors with high pressure sensitivity for application in electronic skin and health monitoring
Gregor Schwartz,Benjamin C. K. Tee,Jianguo Mei,Anthony L. Appleton,Do Hwan Kim,Do Hwan Kim,Huiliang Wang,Zhenan Bao +7 more
TL;DR: It is demonstrated that the flexible pressure-sensitive organic thin film transistors fabrication can be used for non-invasive, high fidelity, continuous radial artery pulse wave monitoring, which may lead to the use of flexible pressure sensors in mobile health monitoring and remote diagnostics in cardiovascular medicine.
References
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Journal ArticleDOI
Elastomeric Transistor Stamps: Reversible Probing of Charge Transport in Organic Crystals
Vikram C. Sundar,Jana Zaumseil,Vitaly Podzorov,Etienne Menard,R. L. Willett,Takao Someya,Michael Gershenson,John A. Rogers +7 more
TL;DR: This method, which eliminates exposure of the fragile organic surface to the hazards of conventional processing, enables fabrication of rubrene transistors with charge carrier mobilities as high as ∼15 cm2/V·s and subthreshold slopes as low as 2nF·V/decade·cm2.
Journal ArticleDOI
Conformable, flexible, large-area networks of pressure and thermal sensors with organic transistor active matrixes
Takao Someya,Yusaku Kato,Tsuyoshi Sekitani,Shingo Iba,Yoshiaki Noguchi,Yousuke Murase,Hiroshi Kawaguchi,Takayasu Sakurai +7 more
TL;DR: This work has successfully developed conformable, flexible, large-area networks of thermal and pressure sensors based on an organic semiconductor, and, by means of laminated sensor networks, the distributions of pressure and temperature are simultaneously obtained.
Journal ArticleDOI
A Rubberlike Stretchable Active Matrix Using Elastic Conductors
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